Muzzle brake



FIG. 1 is a front elevational view of a muzzle brake showing my new design along with the environment upon which it is used, namely a gun barrel, depicted in phantom lines;

FIG. 2 is a left side elevational view thereof;

FIG. 3 is a right side elevational view thereof;

FIG. 4 is a front elevational view of a muzzle brake showing a second embodiment of my new design along with the environment upon which it is used, namely a gun barrel and a portion of the mounting bracket depicted in phantom lines;

FIG. 5 is a left side elevational view thereof;

FIG. 6 is a front elevational view of a muzzle brake showing a third embodiment of my new design along with the environment upon which it is used, namely a gun barrel, depicted in phantom lines;

FIG. 7 is a front elevational view of a muzzle brake showing a fourth embodiment of my new design along with the environment upon which it is used, namely a gun barrel, depicted in phantom lines.

The right side elevational view of FIGS. 4, 6 and 7 are the same as that of FIG. 3.

The left side elevational view of FIGS. 6 and 7 are the same as that of FIGS. 2 and 5 respectively. 

The ornamental design for a muzzle brake, as shown and described. 